By the end it has completely changed over — without the reader even noticing!

The pair's idea has already struck gold on the crowdfunding website, Kickstarter where the two have raised more than $20,000 from over 450 backers to fund their first hardback book.

"58% of adults in the UK regret not learning another language when they were younger," they wrote. "That number is only set to get bigger as a whole generation miss out on the gift of another language. We want to change all of this by combining language education with entertainment. That's why we're making a beautiful hardback book for kids."

In addition to written books the pair is also looking to create audio versions, as well as build an app and even create puppet show.